These are just paper punching loads I'm after. I suppose I could use 38 brass for really light loads, but . . . it's a 357 - if I wanted to shoot 38s I'd buy a different gun.
For PD rounds I use store-bought - 180 grain Black Talons. Not sure I'd want to spend a day at the range shooting them, even if they didn't cost a gajillion dollars a round.